:root {
  --accent: #5b3df2;
  --accent2: #4a90ff;
  --bg: #f2f2f7;
  --card: #ffffff;
  --ink: #1c1c1e;
  --muted: #8e8e93;
  --border: #e5e5ea;
  --danger: #ff3b30;
  --radius: 16px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000; --card: #1c1c1e; --ink: #ffffff; --muted: #8e8e93; --border: #38383a;
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, system-ui, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

.hidden { display: none !important; }

/* Layout */
.screen { min-height: 100%; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 10;
  padding: calc(var(--safe-top) + 8px) 16px 8px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  display: flex; align-items: center; gap: 10px;
  border-bottom: 0.5px solid var(--border);
}
.topbar h1 { font-size: 22px; font-weight: 800; margin: 0; flex: 1; }
.topbar .icon-btn {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--card); display: grid; place-items: center; font-size: 18px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.content { flex: 1; padding: 12px 16px calc(var(--safe-bottom) + 24px); }

/* Login */
.login { justify-content: center; align-items: center; padding: 24px; text-align: center; gap: 8px; }
.login .logo { width: 84px; height: 84px; border-radius: 20px; margin-bottom: 8px; }
.login h1 { font-size: 34px; font-weight: 800; margin: 4px 0 0; }
.login .sub { color: var(--muted); margin: 0 0 18px; }
.login form { width: 100%; max-width: 340px; display: flex; flex-direction: column; gap: 12px; }

/* Fields */
.field {
  width: 100%; padding: 14px 14px; border-radius: 12px;
  background: var(--card); border: 1px solid var(--border); font-size: 17px;
}
.field:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

/* Buttons */
.btn {
  padding: 14px 18px; border-radius: 999px; font-weight: 600; font-size: 17px;
  background: var(--accent); color: #fff; text-align: center;
}
.btn:disabled { opacity: 0.4; }
.btn.secondary { background: var(--card); color: var(--accent); border: 1px solid var(--border); }
.btn.danger { background: var(--card); color: var(--danger); }
.btn.block { width: 100%; }

/* Cards */
.card { background: var(--card); border-radius: var(--radius); padding: 14px 16px; }
.list { display: flex; flex-direction: column; gap: 1px; background: var(--border); border-radius: var(--radius); overflow: hidden; }
.list .row {
  background: var(--card); padding: 14px 16px; display: flex; align-items: center; gap: 12px;
  text-align: left; width: 100%;
}
.list .row:active { background: color-mix(in srgb, var(--card) 90%, var(--accent)); }
.row .col { flex: 1; min-width: 0; }
.row .merchant { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row .sub { color: var(--muted); font-size: 13px; }
.row .amount { font-weight: 700; font-variant-numeric: tabular-nums; }
.row .chev { color: var(--muted); font-size: 15px; }

/* Summary cards */
.summary { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 12px; -webkit-overflow-scrolling: touch; }
.summary .scard { flex: 0 0 auto; min-width: 120px; background: var(--card); border-radius: 14px; padding: 12px 14px; }
.summary .scard .t { font-size: 13px; color: var(--muted); }
.summary .scard .v { font-size: 20px; font-weight: 800; font-variant-numeric: tabular-nums; margin-top: 2px; }

/* Chips */
.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 12px; }
.chip { flex: 0 0 auto; padding: 7px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); font-size: 15px; }
.chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }

.search { width: 100%; margin-bottom: 12px; }

/* Detail / review form */
.form-group { background: var(--card); border-radius: var(--radius); margin-bottom: 16px; overflow: hidden; }
.form-group .frow { display: flex; align-items: center; padding: 12px 16px; border-bottom: 0.5px solid var(--border); gap: 10px; }
.form-group .frow:last-child { border-bottom: none; }
.form-group .frow label { color: var(--muted); flex: 0 0 40%; }
.form-group .frow input, .form-group .frow select { flex: 1; text-align: right; border: none; background: none; padding: 0; }
.form-group .frow input:focus { outline: none; }
.section-title { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; margin: 4px 4px 8px; }

.thumb { width: 100%; max-height: 300px; object-fit: contain; border-radius: var(--radius); background: var(--card); }

/* Sheet header (review/detail) */
.sheet-head { display: flex; align-items: center; padding: calc(var(--safe-top) + 10px) 16px 10px; gap: 8px; }
.sheet-head .title { flex: 1; text-align: center; font-weight: 700; }
.sheet-head button { color: var(--accent); font-size: 17px; padding: 6px; }
.sheet-head button.bold { font-weight: 700; }

/* Toast + spinner */
.toast { position: fixed; left: 50%; bottom: calc(var(--safe-bottom) + 24px); transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 999px; font-size: 14px; z-index: 100; opacity: 0; transition: opacity .2s; }
.toast.show { opacity: 0.95; }
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.35); display: grid; place-items: center; z-index: 50; }
.spinner { width: 34px; height: 34px; border: 3px solid rgba(255,255,255,0.4); border-top-color: #fff; border-radius: 50%; animation: spin 0.8s linear infinite; }
.card-spin { background: var(--card); padding: 22px; border-radius: 16px; display: flex; flex-direction: column; align-items: center; gap: 12px; color: var(--muted); }
@keyframes spin { to { transform: rotate(360deg); } }

.empty { text-align: center; color: var(--muted); padding: 60px 20px; }
.empty .big { font-size: 46px; margin-bottom: 10px; }
.menu-pop { position: absolute; top: calc(var(--safe-top) + 52px); background: var(--card); border-radius: 14px; box-shadow: 0 8px 30px rgba(0,0,0,0.2); overflow: hidden; z-index: 20; min-width: 220px; }
.menu-pop button { display: flex; gap: 10px; align-items: center; width: 100%; padding: 13px 16px; text-align: left; border-bottom: 0.5px solid var(--border); }
.menu-pop button:last-child { border-bottom: none; }
.menu-pop button.danger { color: var(--danger); }
.err { color: var(--danger); font-size: 14px; text-align: center; }